Local non-unidimensional combustion front velocities for nitroglycerin-based propellants

Abstract

Parameters of transverse hotspot-forming have been investigated from the standpoint of the socalled hotspot-pulsating combustion mechanism for condensed energetic substances (propellants, explosives, etc.). The propagation of a transverse wave over the lateral surface of the sample has been videorecorded. A frame-by-frame analysis of the video record has made it possible to determine the geometric characteristics and local velocities of the propagating wave. Combustion wave velocity distribution data obtained by other methods are presented, and all velocity data are analyzed in relation to the sample-average velocity and pressure.